/*
 *
 *  * Copyright (C) 2015 Square, Inc.
 *  *
 *  * Licensed under the Apache License, Version 2.0 (the "License");
 *  * you may not use this file except in compliance with the License.
 *  * You may obtain a copy of the License at
 *  *
 *  *      http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
 *  * limitations under the License.
 *
 */
package com.lark.oapi.okhttp;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Versions of TLS that can be offered when negotiating a secure socket. See {@link
 * javax.net.ssl.SSLSocket#setEnabledProtocols}.
 */
public enum TlsVersion {
    TLS_1_3("TLSv1.3"), // 2016.
    TLS_1_2("TLSv1.2"), // 2008.
    TLS_1_1("TLSv1.1"), // 2006.
    TLS_1_0("TLSv1"),   // 1999.
    SSL_3_0("SSLv3"),   // 1996.
    ;

    final String javaName;

    TlsVersion(String javaName) {
        this.javaName = javaName;
    }

    public static TlsVersion forJavaName(String javaName) {
        switch (javaName) {
            case "TLSv1.3":
                return TLS_1_3;
            case "TLSv1.2":
                return TLS_1_2;
            case "TLSv1.1":
                return TLS_1_1;
            case "TLSv1":
                return TLS_1_0;
            case "SSLv3":
                return SSL_3_0;
        }
        throw new IllegalArgumentException("Unexpected TLS version: " + javaName);
    }

    static List<TlsVersion> forJavaNames(String... tlsVersions) {
        List<TlsVersion> result = new ArrayList<>(tlsVersions.length);
        for (String tlsVersion : tlsVersions) {
            result.add(forJavaName(tlsVersion));
        }
        return Collections.unmodifiableList(result);
    }

    public String javaName() {
        return javaName;
    }
}
